T Igarashi   Y Hirabayashi   R Shimizu   K Saitoh   H Fukuda   H Suzuki   
ANESTHESIOLOGY 92(6) 1631-1636 2000年6月
Background: The spread of epidural analgesia is facilitated by pregnancy. Changes in the epidural structure during pregnancy may affect the spread of analgesia in pregnant women. To investigate the changes in the epidural space produced by pregnan...